Question: Q2) The world standard for tiny particles in air with the thickness of more than 2.5 micrometer is 50 m/ m3 , if risk factor

Q2) The world standard for tiny particles in air with the thickness of more than 2.5 micrometer is 50 m/ m3 , if risk factor for these particles to be 0.85 .what microgram of these particle will be penetrated to lungs in each breathing containing 0.5 Litter of air ?

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